Segment Information (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Information regarding operating segment
Commissions and Fees	$ 854	$ 789	$ 1,854	$ 1,752
Investment income	8	10	16	19
Other Income	1		1
Total Revenues	863	799	1,871	1,771
Depreciation and Amortization	36	37	73	73
Total consolidated operating income	157	169	395	470
Interest in Earnings of Associates, net of tax	(3)	(2)	13	18
Global [Member]
Information regarding operating segment
Commissions and Fees	271	249	629	580
Investment income	3	2	6	5
Other Income	0	0	0	0
Total Revenues	274	251	635	585
Depreciation and Amortization	5	5	9	9
Total consolidated operating income	89	87	264	241
Interest in Earnings of Associates, net of tax	0	0	0	0
North America [Member]
Information regarding operating segment
Commissions and Fees	326	328	682	693
Investment income	1	5	3	8
Other Income	1	0	1	0
Total Revenues	328	333	686	701
Depreciation and Amortization	3	6	10	12
Total consolidated operating income	61	68	146	161
Interest in Earnings of Associates, net of tax	0	0	0	0
International [Member]
Information regarding operating segment
Commissions and Fees	257	212	543	479
Investment income	4	3	7	6
Other Income	0	0	0	0
Total Revenues	261	215	550	485
Depreciation and Amortization	10	5	15	10
Total consolidated operating income	56	41	142	128
Interest in Earnings of Associates, net of tax	(3)	(2)	13	18
Retail [Member]
Information regarding operating segment
Commissions and Fees	583	540	1,225	1,172
Investment income	5	8	10	14
Other Income	1	0	1	0
Total Revenues	589	548	1,236	1,186
Depreciation and Amortization	13	11	25	22
Total consolidated operating income	117	109	288	289
Interest in Earnings of Associates, net of tax	(3)	(2)	13	18
Operating Segments [Member]
Information regarding operating segment
Commissions and Fees	854	789	1,854	1,752
Investment income	8	10	16	19
Other Income	1	0	1	0
Total Revenues	863	799	1,871	1,771
Depreciation and Amortization	18	16	34	31
Total consolidated operating income	206	196	552	530
Interest in Earnings of Associates, net of tax	(3)	(2)	13	18
Corporate and Other [Member]
Information regarding operating segment
Commissions and Fees	0	0	0	0
Investment income	0	0	0	0
Other Income	0	0	0	0
Total Revenues	0	0	0	0
Depreciation and Amortization	18	21	39	42
Total consolidated operating income	(49)	(27)	(157)	(60)
Interest in Earnings of Associates, net of tax	$ 0	$ 0	$ 0	$ 0